DPMS AR .22 Bull Barrel
I received the DPMS Upper today for T & E.
I have not had a chance to shoot it. Nasty day here.
My initial impression is it appears to be a well built, solid upper.
It is totally different from the Atchison bolt system. This is a very simple, straight forward bolt system.
The upper receiver is designed for this bolt. It is not a standard AR upper receiver. Outward appearance does look like a standard receiver with the exception of a smaller ejection port.
The forward assist is a dummy plug, but is there.
The bolt will lock back manually using the existing bolt catch.
The bolt looks to be solid with a rod and spring leading to the rear bolt block.
When the upper is opened, the rear block will drop to the point where the actual bolt catches on the charging handle.
The lug on the top of the bolt keeps it from clearing the charging handle and falling out.
The charging handle has to be released to remove the bolt.
The rear block is also beveled so the upper and lower close easily without having to push the BCG in.
I really like the simplicity of the bolt system. The feed ramp is part of the barrel chamber. So it can't move which should aid in reliability.
The bolt itself reminds me of a 10/22 bolt.
Here are some quick pictures. Poor quality but I'll have time to get better ones when I do the review.
Upper as it came:
Rifle as I will test it
Independent Field Tester/R & D
"Better to die for something than Live for nothing"